2023 Fiscal Year Final Research Report
Turbulent flame propagation and extinction behaviors and mechanisms of solid particle fuel/ammonia co-combustion
| Project/Area Number |
22K20395
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0301:Mechanics of materials, production engineering, design engineering, fluid engineering, thermal engineering, mechanical dynamics, robotics, aerospace engineering, marine and maritime engineering, and related fields
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| Research Institution | Tohoku University |
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Principal Investigator |
Xia Yu 東北大学, 流体科学研究所, 特任助教 (10945645)
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Keywords | Ammonia combustion / Particle combustion / Flame propagation / Flame extinction / Turbulent combustion / co-combustion |
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| Outline of Final Research Achievements |
Ammonia is a promising hydrogen energy carrier and carbon-free fuel. Co-combustion of ammonia within an existing particle-fueled thermal power plant is one of the most promising ways to step into a carbon neutral society. However, turbulent flame extinction is a significant challenge for its utilization. Therefore, through a unique self-designed turbulent combustion system, experiments on turbulent flame propagation and extinction in pure ammonia, pure particle cloud and ammonia-particle cloud co-combustion were conducted. The results showed that, in co-combustion, the particle can enhance turbulent flame propagation velocity and extend the turbulent flame extinction limits of pure ammonia combustion at ammonia-lean cases.
Through further analysis, it was found that, in co-combustion, particles have two dominant effects on the turbulent flame propagation and extinction of pure ammonia combustion, including the particle heat sink and volatile matter decomposed from the particles.
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| Free Research Field |
熱工学, 安全工学, 燃焼
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| Academic Significance and Societal Importance of the Research Achievements |
The findings can help our society transition to a carbon-neutral with safety-production society. First,results can be used to optimize burner design and operation for co-combustion. Besides, result can be used to evaluate explosion hazard of particles-gas. New safety strategies can be developed.
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